Concealed french-casement lock



'0. 1. HAGSTROM.

CONCEAIED FRENCH CASEMENT LOCK.

APPLICATION FILED JUNE 14, |919.

1,368Q141, Patented Feb. s, 1921.

3 SHEETSSHEET l.

Jag-,

IIN: o@

wwf/WOR MD u i 4mm/frs C. j. HAGSTRUM.

CONCEALED FRENCH CASEMENT I.OCK.

APPLlcATmN FILED JUNE 14. 1919.

Patented Feb. 8, 1921. Jfz'g-:Q

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g2g@ nro/Mfrs C. I. HAGSTROM.

coNcEALEn FRENCH cAsEMENT LocK.

APPLICATION FILED JUNE I4. I9I9.

1,868,141. Patented Feb. s, 1921.

3 SHEETS-SHEET 3.

IN VEN TOR /65j W- ma/mm ATTUHNEYS UNITED STATES CARI. JOHN HAGSTRQM, orGLEN covn, NEWYORK. i

PATENT oFFi coNcEALEn rnnivcii-ensniiinni Lock.`

i Application led J une "14,

To all 'LU/wm t 'may concern:

Be it known that I, CARL JoHNfHAd srnoii,y av citizen of the UnitedStates, and a resident of Glen Cove,`inkthe county of Nassau. and yStateof New York, have in- `vented a new and Improved Concealed relates todevices7 parts of which are car-V ried by the meeting doors or windows,and while vI shall refer for conveniencel hereinafter to a door I wishto be undeistoodas covering generically any analogous device on or withwhich my improvement is adapt ed to be used, tliepart carried by onedoor being adapted to be operatedl either by a key or a knob, andthepartscarried by the uother door being adapted to beoperated Vby theinsertion of a thumb or. finger through the striking edge of the latterafter the vfirst vdoor is opened.

With the foregoing` 'and' other objects inV viewtheiiivention consistsin the arrangement and combination of partshereinafter described andclaimed, and `while the invention is not restricted to the exact de-Vtails of construction ldisclosed or suggested herein7 stillior thepurpose of illustrating a practical embodiment` thereof reference is hadto the accompanying. drawings7 Vin which like reference charactersdesignate the same parts in the several views, and in Y ,which- F igiire1 is an` outsideV elevation` of Vthe two main coperating parts of theimproved lock7 one portion of one of the casings being removed and:` theupward and downward rod connections being broken away.

Fig. 2 is a view -similar to the left side of Fig. 1 4but showing achanged position of, the bolt and,l parts associated therewith.V

Fig-.f3 is atransverse*,sectioinon the line' 3f-3 ofFigJ. I

Specification of Lcttersiatent.

191e. seriai No. 304,120.

ig. is an elevation of the same parts` as in Fig. 2 but indicatingtheopposite side` or the lock and also indicating. the face of.

the opposite casing removedl -"a a f n c i u c Fig. 5 is a view similarto the right side Patented Feb. 8, `1.921. n

of Fig. t and indicating the opening operation bythe thumb. Fig. 6 is aplan View of Vthe lock shown n )giga with parts in section on the lineFig. Tis a 'fragmentary view of one of the catches at the top offeitherdoor. Fig. 8 is a view of the same at-right anglesto Figa?.

Fig.` is a plan view of the saine. Fig.` 10 is 'an end viewy of the rodconnecting knuckles. y

Fig'. 11`fis a vertical sectional view of the casingplate presumed tobelremoved from Fig.2.` `V

'Fig 12 isja plan viewwor1 the catch for the lower `end of the door.

Fig. 13 is `a verticalsectional view of the]V same on the line 13-13. Al

Fig. 14; isa diagram indicatingithe bot@ toni of a door and theautomatic releasing means-for the catch boltindicated in Figs. 12 and13; and y v Y z Fig. 15 is Vaf view corresponding essentially to Fig.E2,` but indicating a modification" with means'for `pr`eventingtheopen-` ing of thelock from' the outside of the door except by the useofa key.

Referring nowrmore specifically to the drawings, the main views` showtwo casings.

1Q and 17 adapted to be niortised in oi' otherwise secured to themeeting or strikingedges oftwo cooperating doors. In thefcasingl islitted` a bolt 18 slidable transversely of the casing and adapteditoproject beyondthe.,

same for coperation with a'socket: 19` of the other casing, under theforce of a springQO` anchored at 21 andbearing in a notch` or groove 22at the innernend of the 'shank 23. of said hole. The shankl23 maybemadey advantageously otroundmetal having one end tapped intothe innerface `of jthe bolt 18while its other end isturned at right an` gies tothesma'in portion of the shank where` ithas easy rolling bearingat 24with the* arm` 25'pivotedl at 26 adjacent toone end of the casing. Saidarm isprovided adja-` centto its `free endwith a lugQ projectinglaterally therefrom and adapted to` strike aga-inst the arm28 of a bellcrank 29 pivoted VatVBO. andurged normally in a direction to occupy theposition shown in Fig. 1 by virtue of astrong spring 31.

l32 indicates a tumbler having a hub 33 journaled in the face plates 34and 35 of the the arm 35V in the same direction though around its owncenter 26. The movement of the arm causes the sliding movement of thebolt 18 inward and therotation of the bell crank 29 toward the right.

The opposite casing 17 is likewise mortised orotherwise secured in oruponl the striking e'dgeof the other door and is provided centrally witha plunger 39 corre! spending in'some respect to the bolt 1 8 in itsmovements. The plunger is located in the socket 19 of the casing 17 Vandhas its active face beveled and concaved at 40 provid; ing an easy thumbhold rfor manipulation thereof inward. v lIhe inner end 'or portion ofthe plunger isl slotted at 41 fordirect c0- operation with :a lug 42fixed to the inner surface of the wall 43 while thel main portion of theplunger is-guided between lugs 44 and so confined to movements in rightlines transverse of the casing. The beveling ofthe outer. surface oftheplunger provides ample clearance for the engagement Vof the outer endVof the bolt 18 in the socket 19 when the lock is in lnormal holdinglposiNV tion. HThe 'beveled face ofthe bolt18 strikesV against aprojection45 and more particu-V larly against an anti-friction roller 46journr naled therein `so that the action-of thelock is .unusually easy.The upper 'e and lower yends of the plunger' consist of horns 47 whichwhen the plunger is forced'inward bear against the arms 48 of bellcranks 4,9 pivoted at 50 1n the casing, such movement beingagainst theforce ofthe springs V51 which tendv to hold the parts in the positionshown in Fig. 4. The face plate 34 of the casing 16 in addition to theupper and lower flanges is provided with a pair of spaced lugs 34adapted to straddlethe shank 23 and so cooperate with the front portionof the casing to guide. the bolt and its shankV in itshorizontalreciprocations.

Referring now to Figs. 7 o the type of .catch bolt that I prefer to useat the top of'each door. for .directcoporay tion with. the frameabove'the door. Each of these devices comprises a bolt 52 slidableupward through the ,casing 53 under the force of a spring 54 with-inthecasing tend- -ing to causethebeveled end of the bolt to engage in akeeper in thek door frame. The bolt is held from rotationbyv means of a8 and 9 I show' tion to the main bevel 52 which provides for theautomatic snapping of the bolt into place when the door isvbeing closed,is profvided with a slight bevel 52 on the opposite' side to facilitatethe opening of the door. To a hook 57 formed on the lower end of thebolt shank I connect a jointed rod 58 the several'portionsof which beingconnected adjustably as to length by `a turn buckle 59, or itsequivalent, while the eX- treme lower endof the rod is connected to oneof the knuckles 60.` Each of these knuckles comprises a tongue 61 forconnection with a Vbell crank 29 or 49-with a pivot 62` while the bodyportion of the knuckle is recessed atv63 for the head 64 formed ontheend of the vrodby a'simple liattening of the rod'at 65. This flattenedportion of the rod 65 is adapted to slipdirectly'into a narrow neckextension 66 from the socket 63. As shown clearly inFig. 6 the headedend of the rod is held from lateral` displacement or movement in anydirection with respect to the knuckle by means 5f the adjacent portionof the casing. Theconnection is easily effected between the rod and theknuckle. W hen Vthe door is being closed the bolts 52 move inwardagainst the springs 54, the loose connection between the hook 57 and thehook 58 of theupper end of the rod permitting free 'movement' fof thebolt whether therrodas a wholeV moves downward or not. The bolts 52 areheld normally projected upwardwhether the door is opened or closedbyfvirtue of the springs54. o

At the bottom of each door is acatch such Yas vshown in FigsQ1'2, 13and14, the same 72 formed ,in the side of the bolt.l The force i i ofthe spring 71 serves to* cause the point of the detent to gripftheV boltfrictionally with` a force superior to the spring 69 so that when theholt-'is lifted by connection there- Y with ofthe rod 73 projectingdownward from .the knuckle 7 4Vpivoted at 7 5 tothe tumbler 32 or asimilar knuckle7 6 connected to the lower bell crank 49 against'theforce of the spring 71 the bolt will be heldin its elevated positionwhenthe door is open or being opened.v .Consequently whenV the door isopen there'can be no Contact betweenV the bolt 67 and the floor. Therodsf73'are con-- nected preferably to` the bolts 67 through lostmotion'hookssuch asshown at 57 and 58 so that the action of .the'boltsA67 will upper end of the lever 82 is bent outward Y ment.

and is adapted to strike against an adjustable stop such as a screw 85fitted in the door jamb. By the adjustment ofthe screw in or out thecontrol of the detent may bev easily and accurately determinedirrespective of the tightness or looseness of the door on its hinges. Itwill be Aunderstood that while the bolt 67 is normally held in theposition shown in Fig. 13 when the door is open, when the door is closedthe 'ree end of the lever 82 striking against the stop 85 will cause therod or wire 79 to hold the detent out of frictional contact with thebolt 67 allowing said bolt to snap downward under the force of thespring 69 and into a metallic socket piece 86 fitted in the door sill orthe' like.

The construction in Fig. 15 includes practically all of the features ofFigs. l and 2, but the casing 16 has a greater extent upward anddownward than the casing 16 vfor the accommodation of additional parts.The tumbler 32, hub 33, bolt 18, shank 23, arm 25, bell crank 29 andother associated parts being practically identical with thecorresponding parts in the first figures. The knuckles 60 and 74',however, are longer .than the corresponding members aforesaid thoughtheir function is the same. 87 indicates a bolt, or its equivalent,slidable vertically within the casing 16 and conlined by a lug 88 or thelike from lateral move- This bolt has a lip or lng 89 which is adaptedto engage over a lug 27 carried by the arm 25 whereby said arm is heldfrom movement around its pivot 26 and as a con'- r sequence the lockingbolts cannot be moved or opened by the means above described until thebolt 87 is released .from the lug 27.

The release of the bolt 87 may be effected in either of two ways asillustrated: First, by the turning of a knob fitted in the square hole90 of a tumbler 91 in the upper end of the casing, said tumbler having alug 92 coperating with the bolt in a notch 93 so when the tumbler isturned to the left as Y shown in the ligure the bolt 87 will be lifted.VAdjacent to the lower end of the casing is a slide 94 to which ispivoted a bell crank 95 Jfrom one arm of which a rod 96 extends to thetumbler extension 97. VThe slide 94 is close to a keyhole 98 to which akey may be introduced from the outside of the door, which when turnedwill cause the slide to move horizontally beneath a rib 99 fixed to thecasing. l canse the turning of the bell crank and the This movement ofthe slide will drawing downward of the rod 96 and openingof the bolt 87.

I claim:

l.. The herein described French easement lock comprising two coperatingcasings, one for each of two easement doors, actuating means movablealong the central portion of each casing away from the other casing, onebeing movable by hand from the edge of the door only when the other dooris open, a pair of bolts for the top and bottom of each door, operatingmeans in the upper and lower portions of each casing connected to saidbolts for moving them toward and from each other simultaneously, andconnections between each actuator and the bolt operating means. A

2. In a French easement lock, the combination of a lock casing, a boltmovable hori zontally therein and adapted to project beyond the strikingedge of the door, a pivoted tumbler within the casing, an acuatorbetween the tumbler and the bolt and serving to retract the bolt whenthe tumbler is moved, said actuator being in the form of anV andsaidtumbler whereby when the tnrnblerV is moved to retract the first'mentioned bolt` the bottom bolt will be moved simnltanef ously.

3. In a lock of the cla-ss set forth, a bolt i i for one end of thedoor, means to withdraw the bolt into the door from engagement with thedoor frame, means to automatically hold the bolt within the door, thebolt having a longitudinal groove formed along one side thereof, saidautomatic holding means comprising a spring-pressed detent actingfrictionally against said bolt at right angles thereto and projectinginto said groove whereby the bolt is held from rotation, and means toautomatically vrelease said detent when Vthe door is closed.

4. In a Ldoor lock, the combination ot a casing, a member rotatabletherein, means to rotate the member, a bolt at one end of the door andconnections between they bolt and said rotatable member serving to causemovement of the bolt in one direction when the rotatable member ismoved, said connections including a knuckle pivoted to said rotatablemember and having in its opposite end a recess with a restricted openinglead ing therefrom, said connections VVincluding also .a rod having ahead at its end and a flat portion' adjacent thereto, the fiatportion'being adapted to slip into the narrow opening of the knucklewhile the end ofthe rod constitutes. a head tted in the mainv opening ofthe member.

